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36 terms

Muscle Anatomy

These are flash cards for Anatomy and Physiology focusing on the anatomy of muscles
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Endomysium
The innermost connective tissue covering muscle cells
Fasciles
Groups of fibers.
Perinysium
The layer in the middle of connective tissues in the muscles.
Epimysium
Entire muscle sheath.
Insertion
The point where the muscle attaches to the bone/bones that don't move.
Prime mover
This is the muscle type that does the movement.
Antagonist
This is the muscle type that opposes the movement of the prime mover.
Synergist
This is the muscle type that helps the prime mover move the muscle most efficiently.
Fixator
This muscle type focuses on keeping the joints stable.
Aponeurosis
Extensions of the epimysium that connect to adjacent muscle.
First Class Lever
Fulcrum is in the middle between the weight and the force.
Second Class Lever
Fulcrum is on one end. Weight is in between fulcrum and upward/downward force.
Third Class Lever
Fulcrum is at the end, however upward/downward force is between the weight and the fulcrum. Most common lever in the body.
Central Nervous System
Brain, Spinal cord
Peripheral Nervous System
Nerves in the perephry of the body, spinal nerves and cranial nerves.
Afferent Nervous System
incoming sensory pathways
Efferent Nervous System
Out going motor pathways
Somatic Nervous System
Voluntary control muscles
Autonomic Nervous System
Carry involuntary signials
Sympathetic division
flight of fight response
Parasympathetic division
Coordinating normal resting activities
Neuroglia
Support cells, remain capable of cell division
Astyocytes
Form tight sheath around brain's blood capalaries. make up "Blood-brain barrier"
Microglia
Small, usually stationary, cells involved in phagocytosis
Eperdymal cells
from thin sheets that the fluid-filled cavities in the brain
oligoclendrocytes
produce myelin sheaths in PNS
Schwann cells
produce myelin sheaths in PNS
Nerve fiber
nerve cell which is composed of dendrites and axon
Dendrite
Receive stimuli
Axon
carry stimuli away
interneurons
spinal cord nerves
Endoneurium
Innermost layer of protective tissue for a nerve cell
Perineurium
Middle layer of protective tissue for a nerve cell
Epineurium
Outermost layer of the protective shell for nerve cells
White matter
myelinated fiber
Grey matter
unmyelinated fiber